Improvement in curriers  knives



4 R. E' CHERRINGTON. CURRIERS KNIVES.

7 No.`193,1806. Patented Aug. 7,1877.

VV'LMESSES- l vview of the tool when ready for use.

UNITED STATES EEICE.

ROBERT E. OHERRINGTON, OF HOLYOKE, ,ASSIGNOR TO CHESTER GUILD, OF BOSTON, MASSACHUSETTS.

IMPROVEMENT IN CURRIERS KNIVES.

Specification forming part of Letters Patent No. 193,806, dated August 7, 1877; application tiled February 15, 1877. I

pany and form part of this specification, is a description of my invention sufficient to enable those skilled in the art to practice it.

This invention may be applied in many ways; but it is designed for, and I shall describe it as applied to, a curriers knife, the object being to facilitate the operation of setting the knives, to accomplish which I construct the jaws or clamps in a manner which will be more fully described hereinafter, and close them iirmly against the knives by means of cams or eccentrics, which are operated by turning the handle.

In the drawings, Figure l is a perspective Figs. 2 and 4 are sectional views, showing the position of the clamps when open; Figs. 3 and 5, similar views with the jaws closed; and Fig. 6, a perspective view of the eccentric rod.

A represents one of the clamps having one end attached firmly to the handle B, while the other end projects slightly into the handle C. The clamp D is so made that upon the removal of the rod F it may be entirely separated from the clamp A. Each of these clamps is composed of two jaws, of sufficient length to properly gripe and hold the knives,

and extending from opposite sides of a tube,

having through its center a boleto correspond with the largest diameter ofthe rod F.-

Vlength with the remaining sections of the tube in the clamp D.

The rod F is pinned at its outer end tothe handle C, while its inner end is grooved, as

hat G, to prevent the rod from'being pulled out, unless desired.

The several parts of this holder are put together as follows: The two clamps A and D are placed together, the alternate sections of tube of the one entering the openings in the other, the two, when so placed, forming one continuous tube, into which the rod F is pushed, and the screw H turned in to hold it there. The rod is then turned one-half of a revolution by turning the handle C, the sections ot the clamp D pressed into the depressions at E in the rod, and the jaws are opened, as shown in Figs. 2 and 4. The knives L are placed between the jaws. The rod, being brought back to its original position, closes the jaws, and holds the knives firmly in their places, Figs. 3 and 5.

To prevent the rod F from being turned when not desired, I place a screw, J, in the handle C, to impinge against the collar K on the end of the clamp A.

The particular advantages of this toolholder over all others for a similar purpose are the ease and rapidity with which the knives may be adjusted, making a great saving both in time andlabor.

I claim- 1.'In a tool-holder, the toolholding jaws provided with arched recesses, operated uponI by a central rod, provided .with cams or eccentrics corresponding to such arched recesses, substantially as and for the purpose ,herein described.

4.. In combination, the rod F, clamps A and D, handles B and C, screws H and J, with the knives L, substantially as and for the purpose described.

Executed at Holyoke this 12th day of January, A. D. 1877.

ROBERT E. OHERRINGTON.

Witnesses:

ALBERT LORING, O. W. BENNETT. 

